X
Gemstone Search

Your Details

Please fill in your email address

Please fill in a password

Forgot your password?

Loose Untreated Gemstones: Certified Natural Gems for Collectors and Jewelry, Wholesale Untreated Stones

Untreated Gemstones Weight
Untreated Gemstones Size
Untreated Gemstones Clarity
Untreated Gemstones Price
Untreated Gemstones Treatment

Size Explained

Choose Size or Size Range
For Example: 6-7
For Example: 8-9
Bi-color Untreated Gemstones
Black Untreated Gemstones
Blue Untreated Gemstones
Brown Untreated Gemstones
Golden Untreated Gemstones
Gray Untreated Gemstones
Green Untreated Gemstones
Multicolor Untreated Gemstones
Orange Untreated Gemstones
Pink Untreated Gemstones
Purple Untreated Gemstones
Red Untreated Gemstones
Turquoise Untreated Gemstones
Violet Untreated Gemstones
White Untreated Gemstones
Yellow Untreated Gemstones
Single
Pairs
Lots
Faceted
Cabochons
Clear All
  • Actual Product Photos
  • Reliable Quality
  • Full Transparency
  • Large Selection
  • Affordable Prices
  • Fast, Secure Global Shipping
ID: 611899
Weight: 10.22ct (total)
Size: 12 mm (calibrated)
Clarity: VS
Content: 2 pcs
Price: $ 33.73
Item in Stock
More Options & Item Details
Add to Cart
ID: 464464
Weight: 3.92ct (total)
Size: 4 x 4 mm (calibrated)
Clarity: VS
Content: 10 pcs
Price: $ 36.22
Item in Stock
More Options & Item Details
Add to Cart
ID: 730080
Weight: 0.63ct
Size: 7.5 x 3.2 mm
Clarity: VVS-VS
Content: 1 pc
Price: $ 37.80
Item in Stock
More Options & Item Details
Add to Cart
ID: 392839
Weight: 11.24ct (total)
Size: 14 x 10 mm (calibrated)
Clarity: Transparent
Content: 2 pcs
Price: $ 74.18
Item in Stock
More Options & Item Details
Add to Cart
ID: 683148
Weight: 0.20ct
Size: 3.5 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 114.64
Item in Stock
More Options & Item Details
Add to Cart
ID: 370078
Weight: 1.62ct
Size: 16.9 x 3.8 mm
Clarity: VVS-VS
Content: 1 pc
Price: $ 41.66
Item in Stock
More Options & Item Details
Add to Cart
ID: 397182
Weight: 1.11ct
Size: 6.3 x 5 mm
Clarity: VS
Content: 1 pc
Price: $ 69.97
Item in Stock
More Options & Item Details
Add to Cart
ID: 582758
Weight: 5.20ct
Size: 12.9 x 9.9 mm
Clarity: VVS-VS
Content: 1 pc
Price: $ 27.46
Item in Stock
More Options & Item Details
Add to Cart
ID: 484130
Weight: 3.75ct
Size: 11.2 x 7.9 mm
Clarity: Translucent
Content: 1 pc
Price: $ 24.76
Item in Stock
More Options & Item Details
Add to Cart
ID: 338817
Weight: 5.44ct
Size: 12 mm (calibrated)
Clarity: VS
Content: 1 pc
Price: $ 57.44
Item in Stock
More Options & Item Details
Add to Cart
ID: 431589
Weight: 1.49ct (total)
Size: 5 x 5 mm (calibrated)
Clarity: VS
Content: 2 pcs
Price: $ 15.72
Item in Stock
More Options & Item Details
Add to Cart
ID: 673281
Weight: 1.08ct
Size: 7 x 4.8 mm
Clarity: Transparent
Content: 1 pc
Price: $ 3.89
Item in Stock
More Options & Item Details
Add to Cart
ID: 724920
Weight: 0.52ct
Size: 7.1 x 3.4 mm
Clarity: VVS
Content: 1 pc
Price: $ 21.84
Item in Stock
More Options & Item Details
Add to Cart
ID: 640726
Weight: 0.90ct
Size: 7 x 5.2 mm
Clarity: VS
Content: 1 pc
Price: $ 25.92
Item in Stock
More Options & Item Details
Add to Cart
ID: 561029
Weight: 1.82ct (total)
Size: 7 x 5 mm (calibrated)
Clarity: VS
Content: 2 pcs
Price: $ 14.01
Item in Stock
More Options & Item Details
Add to Cart
ID: 377567
Weight: 3.85ct (total)
Size: 7 x 5 mm (calibrated)
Clarity: VS
Content: 4 pcs
Price: $ 98.64
Item in Stock
More Options & Item Details
Add to Cart
ID: 472443
Weight: 15.28ct
Size: 19.2 x 13.9 mm
Clarity: Translucent
Content: 1 pc
Price: $ 141.19
Item in Stock
More Options & Item Details
Add to Cart
ID: 735232
Weight: 2.29ct
Size: 8.5 x 6.3 mm
Clarity: VS
Content: 1 pc
Price: $ 109.92
Item in Stock
More Options & Item Details
Add to Cart
ID: 716361
Weight: 2.90ct
Size: 10 x 10 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 27.84
Item in Stock
More Options & Item Details
Add to Cart
ID: 708243
Weight: 1.96ct
Size: 9 x 7 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 40.48
Item in Stock
More Options & Item Details
Add to Cart
ID: 691453
Weight: 0.56ct
Size: 5.5 x 3.9 mm
Clarity: VS
Content: 1 pc
Price: $ 47.04
Item in Stock
More Options & Item Details
Add to Cart
ID: 437209
Weight: 3.78ct (total)
Size: 8 mm (calibrated)
Clarity: VVS-VS
Content: 2 pcs
Price: $ 7.49
Item in Stock
More Options & Item Details
Add to Cart
ID: 462719
Weight: 1.30ct (total)
Size: 7 x 5 mm (calibrated)
Clarity: Transparent
Content: 3 pcs
Price: $ 68.64
Item in Stock
More Options & Item Details
Add to Cart
ID: 577726
Weight: 23.29ct
Size: 23.8 x 17.1 mm
Clarity: Transparent
Content: 1 pc
Price: $ 179.53
Item in Stock
More Options & Item Details
Add to Cart
ID: 380561
Weight: 1.70ct (total)
Size: 2.6 mm (calibrated)
Clarity: VVS-VS
Content: 20 pcs
Price: $ 206.06
Item in Stock
More Options & Item Details
Add to Cart
ID: 499010
Weight: 1.36ct
Size: 9 x 7 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 39.05
Item in Stock
More Options & Item Details
Add to Cart
ID: 435887
Weight: 10.33ct
Size: 18 x 13 mm (calibrated)
Clarity: Transparent
Content: 1 pc
Price: $ 33.82
Item in Stock
More Options & Item Details
Add to Cart
ID: 714353
Weight: 0.40ct
Size: 4.2 mm
Clarity: VS-SI
Content: 1 pc
Price: $ 12.00
Item in Stock
More Options & Item Details
Add to Cart
ID: 696535
Weight: 11.04ct
Size: 18 x 13 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 19.87
Item in Stock
More Options & Item Details
Add to Cart
ID: 664166
Weight: 1.21ct
Size: 8 x 6 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 10.89
Item in Stock
More Options & Item Details
Add to Cart
ID: 667182
Weight: 3.87ct (total)
Size: 9 x 7 mm (calibrated)
Clarity: Transparent
Content: 2 pcs
Price: $ 79.37
Item in Stock
More Options & Item Details
Add to Cart
ID: 719932
Weight: 2.84ct
Size: 7.9 x 6.9 mm
Clarity: Transparent
Content: 1 pc
Price: $ 85.20
Item in Stock
More Options & Item Details
Add to Cart
ID: 456246
Weight: 1.53ct
Size: 7.8 x 7.5 mm
Clarity: VS
Content: 1 pc
Price: $ 12.85
Item in Stock
More Options & Item Details
Add to Cart
ID: 636059
Weight: 1.26ct (total)
Size: 8 x 4 mm (calibrated)
Clarity: VS
Content: 2 pcs
Price: $ 22.68
Item in Stock
More Options & Item Details
Add to Cart
ID: 529101
Weight: 3.22ct (total)
Size: 7 x 7 mm (calibrated)
Clarity: VS
Content: 2 pcs
Price: $ 25.50
Item in Stock
More Options & Item Details
Add to Cart
ID: 699555
Weight: 35.33ct
Size: 35.2 x 18.4 mm
Clarity: Opaque
Content: 1 pc
Price: $ 29.68
Item in Stock
More Options & Item Details
Add to Cart
ID: 493533
Weight: 5.46ct
Size: 12.3 x 9.2 mm
Clarity: Opaque
Content: 1 pc
Price: $ 32.76
Item in Stock
More Options & Item Details
Add to Cart
ID: 418432
Weight: 8.86ct
Size: 15.9 x 11.2 mm
Clarity: Translucent
Content: 1 pc
Price: $ 17.54
Item in Stock
More Options & Item Details
Add to Cart
ID: 450796
Weight: 4.63ct
Size: 13.8 x 10.3 mm
Clarity: VVS
Content: 1 pc
Price: $ 42.78
Item in Stock
More Options & Item Details
Add to Cart
ID: 695443
Weight: 6.66ct
Size: 11.3 x 7.7 mm
Clarity: VS
Content: 1 pc
Price: $ 199.80
Item in Stock
More Options & Item Details
Add to Cart
ID: 474310
Weight: 4.80ct
Size: 16.1 x 10.1 mm
Clarity: Translucent
Content: 1 pc
Price: $ 63.36
Item in Stock
More Options & Item Details
Add to Cart
ID: 625377
Weight: 2.09ct
Size: 12 x 8 mm (calibrated)
Clarity: Translucent
Content: 1 pc
Price: $ 6.32
Item in Stock
More Options & Item Details
Add to Cart
ID: 706473
Weight: 6.82ct
Size: 13 x 11 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 13.91
Item in Stock
More Options & Item Details
Add to Cart
ID: 639101
Weight: 1.34ct (total)
Size: 6.2 x 4.2 mm
Clarity: VVS
Content: 2 pcs
Price: $ 11.26
Item in Stock
More Options & Item Details
Add to Cart
ID: 706854
Weight: 2.59ct
Size: 9 x 7 mm (calibrated)
Clarity: Translucent
Content: 1 pc
Price: $ 6.22
Item in Stock
More Options & Item Details
Add to Cart
ID: 698608
Weight: 3.06ct
Size: 11 x 9 mm (calibrated)
Clarity: VVS
Content: 1 pc
Price: $ 25.70
Item in Stock
More Options & Item Details
Add to Cart
ID: 418352
Weight: 10.77ct
Size: 18.5 x 11.8 mm
Clarity: Translucent
Content: 1 pc
Price: $ 21.34
Item in Stock
More Options & Item Details
Add to Cart
ID: 338013
Weight: 14.60ct (total)
Size: 14 x 10 mm (calibrated)
Clarity: Opaque
Content: 2 pcs
Price: $ 28.52
Item in Stock
More Options & Item Details
Add to Cart
ID: 730016
Weight: 1.12ct
Size: 10.1 x 3.5 mm
Clarity: VS-SI
Content: 1 pc
Price: $ 67.20
Item in Stock
More Options & Item Details
Add to Cart
ID: 411374
Weight: 3.65ct (total)
Size: 8 x 6 mm (calibrated)
Clarity: VVS-VS
Content: 2 pcs
Price: $ 90.62
Item in Stock
More Options & Item Details
Add to Cart
ID: 511256
Weight: 0.61ct
Size: 6.7 x 4.8 mm
Clarity: VS
Content: 1 pc
Price: $ 36.24
Item in Stock
More Options & Item Details
Add to Cart
ID: 196855
Weight: 13.35ct
Size: 18 x 13 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 52.87
Item in Stock
More Options & Item Details
Add to Cart
ID: 673444
Weight: 0.70ct
Size: 5 mm (calibrated)
Clarity: VS-SI
Content: 1 pc
Price: $ 16.80
Item in Stock
More Options & Item Details
Add to Cart
ID: 721597
Weight: 16.20ct
Size: 15.7 x 13.5 mm
Clarity: Opaque
Content: 1 pc
Price: $ 16.20
Item in Stock
More Options & Item Details
Add to Cart
ID: 619130
Weight: 18.25ct (total)
Size: 20 x 15 mm (calibrated)
Clarity: Translucent
Content: 2 pcs
Price: $ 48.18
Item in Stock
More Options & Item Details
Add to Cart
ID: 521354
Weight: 11.95ct
Size: 16.8 x 13.4 mm
Clarity: Transparent
Content: 1 pc
Price: $ 94.64
Item in Stock
More Options & Item Details
Add to Cart
ID: 687036
Weight: 2.03ct
Size: 8 mm (calibrated)
Clarity: Opaque
Content: 1 pc
Price: $ 2.44
Item in Stock
More Options & Item Details
Add to Cart
ID: 661874
Weight: 4.74ct
Size: 16.6 x 10.7 mm
Clarity: Opaque
Content: 1 pc
Price: $ 14.78
Item in Stock
More Options & Item Details
Add to Cart
ID: 464254
Weight: 3.71ct (total)
Size: 4 x 4 mm (calibrated)
Clarity: VS
Content: 10 pcs
Price: $ 34.28
Item in Stock
More Options & Item Details
Add to Cart
ID: 720995
Weight: 0.47ct
Size: 8 x 4 mm (calibrated)
Clarity: VVS-VS
Content: 1 pc
Price: $ 3.95
Item in Stock
More Options & Item Details
Add to Cart
1 2 3
...
746
Choose Page
1 - 780

FAQs

What are loose untreated gemstones?

Loose untreated gemstones are natural stones that have not undergone any artificial treatments or enhancements. Examples include unheated sapphires, untreated rubies, and unenhanced diamonds, which maintain their natural beauty and originality.

Why should I choose untreated gemstones over treated ones?

Untreated gemstones, such as unheated topaz and virgin untreated stones, are valued for their authenticity and rarity. These certified untreated gems are perfect for collectors and those seeking ethically sourced, natural stones for unique jewelry designs.

Are untreated gemstones suitable for engagement rings?

Yes, untreated gemstones like GIA-certified natural gems, unenhanced diamonds, and untreated rubies are excellent choices for engagement rings. They offer timeless elegance and are ideal for creating one-of-a-kind designs that reflect personal style.

What makes rare untreated gems valuable for collectors?

Rare untreated gems for collectors, such as authentic untreated crystals and unheated and untreated stones, are prized for their natural appearance and limited availability. Their untouched state makes them highly desirable and a great investment.

How can I ensure the quality of loose untreated gemstones?

Always choose certified untreated gems, like GIA-certified natural gems, to guarantee authenticity and quality. These stones undergo thorough evaluation to ensure they meet the highest standards, making them ideal for both personal collections and jewelry projects.

What types of untreated gemstones are available?

Our collection includes a variety of untreated gemstones such as unheated sapphires, untreated rubies, unenhanced diamonds, and unheated topaz. Each stone is carefully selected to offer unmatched quality and natural beauty.

Are untreated gemstones more expensive than treated ones?

In many cases, untreated gemstones, like precious untreated gemstones and virgin untreated stones, can be more valuable due to their rarity and natural state. Their unique characteristics make them highly sought after by collectors and jewelry enthusiasts.

GemSelect Certified Store Reviews

GemSelect: Over 22 Years in the Gemstone Business! Thank you for trusting us with your purchase!

Overall Rating -> 9 star ratings

I am very pleased with the ways you can filter your searches on this site, finding exactly what I want with little knowledge of what I am looking for is surprisingly easy!

Posted By Leo in March, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I love the quality, presentation and the price of the stones. I love the identification card - report they send with each stone.

Posted By Dia in March, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

It was easy to find what I wanted

Posted By Villian in December, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

Had no difficulty with the website. The only difficulty I had today was making the choice of what I wanted to purchase. There are just so many delicious stones to choose from!!

Posted By Desertchick in July, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

Very fast navigation and purchase, which is good. I need to strike while the iron is hot.

Posted By Tim G. in February, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I've made several purchases through GemSelect in the past, although not within the last six months. Their gems are always beautiful and I have never had an issue with their prices or their stones. Even when I'm not buying, I love scrolling through their website, which is very user friendly. I especially appreciate being able to change the listing order to your own liking, such as most to least expensive, largest to smallest, etc. As with most online orders, however, I think the shipping charges are not commensurate with the actual weight of the items shipped.

Posted By DrLHS in November, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

Im not a jeweler, I buy for my personal use. My dad was a jewelry maker and I love gemstones.

Posted By Andie in September, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

easy site to navigate

Posted By Curt's Cabochons in June, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Good selection, using for custom jewlery for my wife.

Posted By Smitty in June, 2025
Source: Bizrate

Why Choose Loose Untreated Gemstones?

Selecting loose untreated gemstones ensures you’re investing in authentic, natural beauty. Gems like unheated sapphires, untreated rubies, and unenhanced diamonds retain their original allure, free from artificial enhancements. These certified untreated gems are ideal for those seeking unique, ethical, and high-quality stones for custom jewelry or collections.

Perfect for Engagement Rings and Collectors

Our untreated gemstones, including GIA-certified natural gems, are highly sought after for engagement rings and collector’s pieces. With options like unheated topaz and virgin untreated stones, you can create a timeless design that reflects your individual style. Each gem is carefully selected for its purity and brilliance.

Rare and Exquisite Natural Gems

From authentic untreated crystals to precious untreated gemstones, our collection offers something for every taste. These rare untreated gems for collectors are perfect for showcasing the natural beauty of stones like unheated and untreated stones that remain untouched by enhancements, preserving their natural value and appeal.

Quality Assurance You Can Trust

Every stone in our selection of loose untreated gemstones is thoroughly inspected to meet the highest standards. Whether you’re looking for untreated gemstones for engagement rings or certified untreated gems for a special project, our collection ensures authenticity and unparalleled quality.

Read All

Over 19 Years in the Gemstone Business!

Thank you for trusting us with your purchase!

Overall Rating -> 9 star ratings

I am very pleased with the ways you can filter your searches on this site, finding exactly what I want with little knowledge of what I am looking for is surprisingly easy!

Posted By Leo in March, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I love the quality, presentation and the price of the stones. I love the identification card - report they send with each stone.

Posted By Dia in March, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

It was easy to find what I wanted

Posted By Villian in December, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

Had no difficulty with the website. The only difficulty I had today was making the choice of what I wanted to purchase. There are just so many delicious stones to choose from!!

Posted By Desertchick in July, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

Very fast navigation and purchase, which is good. I need to strike while the iron is hot.

Posted By Tim G. in February, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

I've made several purchases through GemSelect in the past, although not within the last six months. Their gems are always beautiful and I have never had an issue with their prices or their stones. Even when I'm not buying, I love scrolling through their website, which is very user friendly. I especially appreciate being able to change the listing order to your own liking, such as most to least expensive, largest to smallest, etc. As with most online orders, however, I think the shipping charges are not commensurate with the actual weight of the items shipped.

Posted By DrLHS in November, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

Im not a jeweler, I buy for my personal use. My dad was a jewelry maker and I love gemstones.

Posted By Andie in September, 2024
Source: Bizrate

Overall Rating -> 10 star ratings

easy site to navigate

Posted By Curt's Cabochons in June, 2025
Source: Bizrate

Overall Rating -> 10 star ratings

Good selection, using for custom jewlery for my wife.

Posted By Smitty in June, 2025
Source: Bizrate

FAQ's

What are loose untreated gemstones?

Loose untreated gemstones are natural stones that have not undergone any artificial treatments or enhancements. Examples include unheated sapphires, untreated rubies, and unenhanced diamonds, which maintain their natural beauty and originality.

Why should I choose untreated gemstones over treated ones?

Untreated gemstones, such as unheated topaz and virgin untreated stones, are valued for their authenticity and rarity. These certified untreated gems are perfect for collectors and those seeking ethically sourced, natural stones for unique jewelry designs.

Are untreated gemstones suitable for engagement rings?

Yes, untreated gemstones like GIA-certified natural gems, unenhanced diamonds, and untreated rubies are excellent choices for engagement rings. They offer timeless elegance and are ideal for creating one-of-a-kind designs that reflect personal style.

What makes rare untreated gems valuable for collectors?

Rare untreated gems for collectors, such as authentic untreated crystals and unheated and untreated stones, are prized for their natural appearance and limited availability. Their untouched state makes them highly desirable and a great investment.

How can I ensure the quality of loose untreated gemstones?

Always choose certified untreated gems, like GIA-certified natural gems, to guarantee authenticity and quality. These stones undergo thorough evaluation to ensure they meet the highest standards, making them ideal for both personal collections and jewelry projects.

What types of untreated gemstones are available?

Our collection includes a variety of untreated gemstones such as unheated sapphires, untreated rubies, unenhanced diamonds, and unheated topaz. Each stone is carefully selected to offer unmatched quality and natural beauty.

Are untreated gemstones more expensive than treated ones?

In many cases, untreated gemstones, like precious untreated gemstones and virgin untreated stones, can be more valuable due to their rarity and natural state. Their unique characteristics make them highly sought after by collectors and jewelry enthusiasts.

Enlarged Gemstone Image